This article absolutely blew my mind. I never even remotely considered the possibility that all of the Pixar films could be connected, but this theory seems to be plausible. It’s going to take me a long time to really wrap my head around it, along with rewatching all of the movies. As Pixar releases more films in the future it will be really intriguing to see if they fit into this supposed universe. It would also be great to actually hear from someone at Pixar on whether or not these type of connections are possible, and if an overall timeline even exists that they try and maintain, or if it has all been a crazy coincidence up to this point.
Update: Here is a great graphic representation of the timeline presented in the original article.The Pixar Theory Timeline